CVE-2026-9397

A weakness has been identified in Besen BS20 EV Charging Station up to 20260426. Affected by this issue is some unknown functionality of the component OTA Update Installation Handler. This manipulation causes improper authorization. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitation is known to be difficult. The original disclosure mentions, that "[t]hese vulnerabilities have been reported to Besen and we have received their acknowlegement that they are reviewing this as of April 2026."

• CWE-266
• CWE-285

• https://github.com/carfeii/besen#finding-4-unauthorized-firmware-installation-via-spoofed-ota-updates
• https://vuldb.com/submit/813576
• https://vuldb.com/vuln/365378
• https://vuldb.com/vuln/365378/cti

Published

May 24, 2026

Last Modified

Jul 23, 2026

Status

Deferred

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